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1745D–ATARM–04-Nov-05
AT91M55800A
12.9.9 APMC Power Mode Register
Register Name: APMC_PMR
Access Type: Read/Write
Backup Reset Value:0x1
Offset: 0x2C
• SHDALS: Shut-down or Alarm Output Selection
This field defines the state of the SHDAL pin when shut-down or alarm is requested.
• WKACKS: Wake-up or Alarm Acknowledge Output Selection
This field defines the state of the WKACKS pin when wake-up or alarm acknowledge is requested.
• ALWKEN: Alarm Wake-up Enable (Code Label APMC_WKEN)
0 = The alarm from the RTC has no wake-up effect.
1 = The alarm from the RTC commands a wake-up.
• ALSHEN: Alarm Shut-down Enable (Code Label APMC_ALSHEN)
0 = The alarm from the RTC has no shut-down effect.
1 = If ALWKEN is 0, the alarm from the RTC commands a shut-down.
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76543210
WKEDG ALSHEN ALWKEN WKACKS SHDALS
SHDALS Shut-down or Alarm Output Selected Code Label
0 0 Tri-stated APMC_SHDALS_OUT_TRIS
0 1 Level 0 APMC_SHDALS_OUT_LEVEL0
1 0 Level 1 APMC_SHDALS_OUT_LEVEL1
11Reserved –
WKACKS
Wake-up or Alarm Acknowledge Output
Selected Code Label
0 0 Tri-stated APMC_WKACKS_OUT_TRIS
0 1 Level 0 APMC_WKACKS_OUT_LEVEL_0
1 0 Level 1 APMC_WKACKS_OUT_LEVEL_1
1 1 Reserved –